Web/API/URLSearchParams/toString

The toString() method of the URLSearchParams interface returns a query string suitable for use in a URL.

Note: This method returns the query string without the question mark. This is different from window.location.search, which includes it.

Note: This feature is available in Web Workers.

Syntax

URLSearchParams.toString()

Parameters

None.

Return value

A DOMString, without the question mark. (Returns an empty string if no search parameters have been set.)

Examples

let url = new URL('https://example.com?foo=1&bar=2');
let params = new URLSearchParams(url.search.slice(1));

//Add a second foo parameter.
params.append('foo', 4);
console.log(params.toString());
//Prints 'foo=1&bar=2&foo=4'

// note: params can also be directly created
let url = new URL('https://example.com?foo=1&bar=2');
let params = url.searchParams;

// or even simpler
let params = new URLSearchParams('foo=1&bar=2');

Specifications

Specification	Status	Comment
URLThe definition of 'toString() (see "stringifier")' in that specification.	Living Standard	Initial definition.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`toString`	Chrome Full support 49	Edge Full support 17	Firefox Full support 29	IE No support No	Opera Full support 36	Safari Full support Yes	WebView Android Full support 49	Chrome Android Full support 49	Firefox Android Full support 29	Opera Android Full support 36	Safari iOS Full support Yes	Samsung Internet Android Full support 5.0

Legend

Full support: Full support
No support: No support